Messages not saved to my "Sent" folder

Hello,

Using Dovecot 2.2.27

1. Had an issue where my Sent box, "disappeared." I used to be present, but then it was just gone. I went in and changed the /etc/dovecot/conf.d/15-mailboxes.conf

the auto=subscribe feature had disappeared, even though I had added that line at setup. Below is the new changes.

# For \Sent mailboxes there are two widely used names. We'll mark both of # them as \Sent. User typically deletes one of them if duplicates are created. mailbox Sent { special_use = \Sent auto = subscribe } mailbox "Sent Messages" { special_use = \Sent } }

2. But, mail is STILL not sent to SENT folder.

3. I have reload both postfix and dovecot, and also systemctl restart postfix && systemctl restart dovecot.

The Sent folder is present, but no mail is stored to it.

4. Before sending this email, I checked my mobile client, and the Sent file was full from previously sent email. When I "updated it"/repolled it, it is now empty.

Any able to lend a helping hand?

Thanks.